Lexicon :: Strong's G2190 - echthros

ἐχθρός, ἔχθρα, ἐχθρόν (ἔχθος hatred); the Sept. numberless times for אויֵב, also for צַר, several times for שׂונֵא and מְשַׂנֵּא, a hater;
1. passively, hated, odious, hateful (in Homer only in this sense): Romans 11:28 (opposed to ἀγαπητός).
2. actively, hostile, hating and opposing another: 1 Corinthians 15:25; 2 Thessalonians 3:15; with the genitive of the person hated or opposed, James 4:4 Lachmann; Galatians 4:16, cf. Meyer or Wieseler on the latter passage used of men as at enmity with God by their sin: Romans 5:10 (cf. Romans 8:7; Colossians 1:21; James 4:4) (but many take ἐχθρός here (as in Romans 11:28, see 1 above) passively; cf. Meyer); τῇ διάνοια, opposing (God) in the mind, Colossians 1:21; ἐχθρός ἄνθρωπος, a man that is hostile, a certain enemy, Matthew 13:28; ὁ ἐχθρός, the hostile one (well known to you), i. e. κατ' ἐξοχήν the devil, the most bitter enemy of the divine government: Luke 10:19, cf. Matthew 13:39 (and ecclesiastical writings). ὁ ἐχθρός (and ἐχθρός) substantively, enemy (so the word, whether adjective or a substantive, is translated in A. V., except twice (R. V. once) foe: ἔσχατος ἐχθρός, 1 Corinthians 15:26): with the genitive of the person to whom one is hostile, Matthew 5:43; Matthew 10:36; Matthew 13:25; Luke 1:(Luke 1:71),Luke 1:74; Luke 6:27,35; 19:27,43; Romans 12:20; Revelation 11:5, 12; in the words of Psalm 109:1 (Ps. 110:1), quoted in Matthew 22:44; Mark 12:36; Luke 20:43; Acts 2:35; 1 Corinthians 15:25 (L brackets; others omit the genitive (see above)); Hebrews 1:13; Hebrews 10:13. with the genitive of the thing: Acts 13:10; τοῦ σταυροῦ τοῦ Χριστοῦ, who given up to their evil passions evade the obligations imposed upon them by the death of Christ, Philippians 3:18.

BLB Scripture Index of Thayer's